EP1711765A1 - Procede et installationde de separation d'air par distillation cryogenique - Google Patents
Procede et installationde de separation d'air par distillation cryogeniqueInfo
- Publication number
- EP1711765A1 EP1711765A1 EP05717658A EP05717658A EP1711765A1 EP 1711765 A1 EP1711765 A1 EP 1711765A1 EP 05717658 A EP05717658 A EP 05717658A EP 05717658 A EP05717658 A EP 05717658A EP 1711765 A1 EP1711765 A1 EP 1711765A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- column
- turbines
- pressure
- exchange line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000926 separation method Methods 0.000 title claims abstract description 18
- 238000009434 installation Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000004821 distillation Methods 0.000 title claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims description 34
- 238000009834 vaporization Methods 0.000 claims description 9
- 230000008016 vaporization Effects 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000002826 coolant Substances 0.000 claims description 2
- 239000003507 refrigerant Substances 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 10
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 229910052786 argon Inorganic materials 0.000 description 5
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
- F25J3/0429—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of feed air, e.g. used as waste or product air or expanded into an auxiliary column
- F25J3/04303—Lachmann expansion, i.e. expanded into oxygen producing or low pressure column
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
- F25J3/04048—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of cold gaseous streams, e.g. intermediate or oxygen enriched (waste) streams
- F25J3/04054—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of cold gaseous streams, e.g. intermediate or oxygen enriched (waste) streams of air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
- F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
- F25J3/0409—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression of oxygen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
- F25J3/04163—Hot end purification of the feed air
- F25J3/04169—Hot end purification of the feed air by adsorption of the impurities
- F25J3/04175—Hot end purification of the feed air by adsorption of the impurities at a pressure of substantially more than the highest pressure column
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
- F25J3/0429—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of feed air, e.g. used as waste or product air or expanded into an auxiliary column
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
- F25J3/0429—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of feed air, e.g. used as waste or product air or expanded into an auxiliary column
- F25J3/04296—Claude expansion, i.e. expanded into the main or high pressure column
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04375—Details relating to the work expansion, e.g. process parameter etc.
- F25J3/04387—Details relating to the work expansion, e.g. process parameter etc. using liquid or hydraulic turbine expansion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04375—Details relating to the work expansion, e.g. process parameter etc.
- F25J3/04393—Details relating to the work expansion, e.g. process parameter etc. using multiple or multistage gas work expansion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/0446—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using the heat generated by mixing two different phases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/0446—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using the heat generated by mixing two different phases
- F25J3/04466—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using the heat generated by mixing two different phases for producing oxygen as a mixing column overhead gas by mixing gaseous air feed and liquid oxygen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2200/00—Processes or apparatus using separation by rectification
- F25J2200/04—Processes or apparatus using separation by rectification in a dual pressure main column system
- F25J2200/06—Processes or apparatus using separation by rectification in a dual pressure main column system in a classical double column flow-sheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2215/00—Processes characterised by the type or other details of the product stream
- F25J2215/50—Oxygen or special cases, e.g. isotope-mixtures or low purity O2
- F25J2215/52—Oxygen production with multiple purity O2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2215/00—Processes characterised by the type or other details of the product stream
- F25J2215/50—Oxygen or special cases, e.g. isotope-mixtures or low purity O2
- F25J2215/54—Oxygen production with multiple pressure O2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
- F25J2235/50—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being oxygen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2240/00—Processes or apparatus involving steps for expanding of process streams
- F25J2240/02—Expansion of a process fluid in a work-extracting turbine (i.e. isentropic expansion), e.g. of the feed stream
- F25J2240/04—Multiple expansion turbines in parallel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2240/00—Processes or apparatus involving steps for expanding of process streams
- F25J2240/02—Expansion of a process fluid in a work-extracting turbine (i.e. isentropic expansion), e.g. of the feed stream
- F25J2240/10—Expansion of a process fluid in a work-extracting turbine (i.e. isentropic expansion), e.g. of the feed stream the fluid being air
Definitions
- the present invention relates to a method and an installation for air separation by cryogenic distillation. It is known to produce a gas of pressurized air by vaporization of pressurized liquid in an exchange line of an air separation apparatus by heat exchange with a compressed gas from a cryogenic temperature. Devices of this type are known from FR-A-2688052, EP-A-0644388, EP-A-1014020 and patent application FR0301722. The energy efficiency of known devices is not> exceilente because it is necessary to evacuate the thermal inputs related to cryogenic compression. In addition, for schemes such as that in Figure 7 of US-A-
- the entire turbine coupled to the cold booster is associated with a system of energy dissipation (oil brake), integrated on the axis of the machines and technologically limited to small powers (of the order of 70
- An object of the invention is to provide an alternative that allows for cold booster method diagrams without energy dissipation system integrated into the turbine blower axis, and therefore to consider using this scheme for almost near all sizes of air separation units.
- a process for separating air by cryogenic distillation in an installation comprising a double or triple air separation column, whose column operating at the highest pressure operates at a so-called medium pressure pressure.
- the installation comprises, in addition to the double or triple column, a mixing column and air coming from at least one of the turbines is sent to the mixing column the air sent to at least one of the turbines upstream of the mixing column comes from the su ⁇ resseur other than the cold booster and leaves this booster at a pressure higher than the high pressure.
- the air from at least one of the turbines is sent to the tank of the mixing column to participate in the exchange of material.
- air at high pressure is sent to a bottom reboiler of the mixing column where it condenses at least partially before being sent to the double or triple column.
- a cryogenic distillation air separation plant comprising: a) a double or triple air separation column, whose column operating at the highest pressure operates at a temperature of pressure called medium pressure, b) an exchange line, c) means for bringing all the air to a higher pressure than the average pressure, and means for purifying it, possibly at this high pressure, d) means for sending a part of the purified air flow into the exchange line to cool it and means for dividing the cooled air into two fractions, e) two turbines and means for sending a fraction of air to each turbine f) means for sending at least a portion of the expanded air into at least one of the turbines to the medium pressure column of the double or triple column, g) a cold booster, means for supplying air, preference drawn at an intermedia point the main exchange line to the cold booster and means for supplying safe air into the cold booster in the main exchange line at an intermediate point upstream of the draw-off point, (h) means for pressurizing at least one liquid from one
- the installation comprises - a mixing column and means for sending air to the mixing column from at least one of the turbines, - means for sending a part of the compressed air in the su ⁇ ressor constituting the energy dissipation means or forming part thereof at least one expansion turbine upstream of the mixing column; means for sending air from at least one of the turbines into the mixing column to participate in the exchange of material.
- a complementary turbine will be used, operating in parallel with the turbine of the first turbine unit su ⁇ resseur, and equipped with its own system of dissipation of energy.
- this system will be a booster followed by a water cooler installed in the hot part.
- “Close in terms of pressure” means that the pressures differ by not more than 5 bar, preferably not more than 2 bar.
- “Close in terms of temperature” means that the temperatures differ by not more than 15 ° C, preferably not more than 10 ° C.
- a booster is a single stage compressor All pressures mentioned are absolute pressures.
- the term “condensation” includes “pseudo condensation.”
- vaporization includes pseudo vaporization, which is distinguished from US-A-5,475,980 in that
- Figure 4 (optional turbine 9), the two turbines 8, 32 aspire at very different pressures, the difference being at least 14 bar and in Figure 5, the pressure difference is about 13 bar and a turbine escapes at low pressure, which is penalizing for pure oxygen.
- - Figures 1 and 2 show an air separation apparatus according to the invention.
- a flow of air at atmospheric pressure is compressed to about 15 bar in a main compressor (not shown).
- the air is then optionally cooled, before being purified to remove impurities (not shown).
- the clean air is divided in two.
- Part of the air 3 is sent to a booster 5 where it is compressed to a pressure of between 17 and 20 bars and then the air is cooled by a condenser water 7 before being sent at the hot end of the main exchange line 9 of the air separation apparatus.
- the pressurized air 11 cools to an intermediate temperature before exiting the exchange line and being divided into two fractions. It is obviously possible for a fraction of the flow 11 to continue cooling down to the cold end of the exchange line 9 from which it will exit liquefied.
- a fraction 13 is sent into a turbine 17 and the remainder, a fraction 15 is sent into a turbine 19.
- the two turbines have the same temperature and suction pressure and the same temperature and outlet pressure but it is obviously possible that these temperatures and pressure are close to each other instead of being identical.
- the two turbine flows are mixed to form an air flow 21 of which a portion 121 is sent to the double column and the remainder 122 to the mixing column 300.
- the flow 1_! 2 constitutes a part of the flow 21 or possibly a fraction the gaseous part of the flow 21 in the case where it is two-phase. It is obviously possible to send all the flow 21 to the medium pressure column 100 and to leave a gaseous part 122 for sending to the mixing column, the medium pressure column replacing in this case the phase separator.
- the pressures of the medium pressure column and the mixing column may be different.
- the turbine 19 may be an insufflation turbine opening to the pressure of the low pressure column.
- Another part 2 of the air at 15 bars constituting the rest of the air is cooled in the exchange line at an intermediate temperature higher than the suction temperature of the turbines 17, 19, compressed in a second booster 23 until at about 30 bar and reintroduced into the exchange line 9 at a higher temperature to continue cooling.
- the air 37 to 30 bar approximately liquefies in the exchange line and the liquid oxygen vaporizes in the exchange line, the temperature of vaporization of the liquid being close to the suction temperature of the second su ⁇ resseur 23.
- the liquefied air leaves the exchange line and is sent to the column system.
- a flow of residual nitrogen 27 is heated in the exchange line 9.
- the first supressor 5 is coupled with one of the turbines 17, 19 and the second booster 23 is coupled with the other of the turbines 19, 17.
- the column system of an air separation apparatus is constituted by a medium pressure column 100 thermally connected with a low pressure column 200 to a minaret, a mixing column 300 and an optional argon column (not shown).
- the low pressure column does not necessarily have a minaret
- the medium pressure column operates at a pressure of 5.5 bar but can operate at a higher pressure.
- the air 121 coming from the two turbines 17, 19 is the flow rate delivered to the bottom of the medium pressure column 100.
- the liquefied air 37 is expanded in the valve 39 or possibly in a turbine and sent to the column system. Rich liquid 51, lower lean liquid 53 and upper lean liquid 55 are sent from the pressure medium column 100 to the low pressure column 200 after expansion stages in valves and subcooling.
- Liquid oxygen is pressurized by the pump 500 and sent as pressurized liquid 25 to the exchange line 9.
- Nitrogen gas is optionally withdrawn from the medium pressure column and is also cooled in the exchange line 9.
- Nitrogen 33 is withdrawn at the top of the low pressure column and warms in the exchange line, after have been used to sub-cool the reflux liquids.
- Residual nitrogen 27 is withdrawn from a lower level of the low pressure column and heats up in the exchange line, after having been used to sub-cool the reflux liquids.
- the column can optionally produce argon by treating a flow 51 withdrawn in low pressure column 200.
- the flow 52 is the tank liquid returned from the argon column, if there is one.
- the mixing column 300 is fed at the top with an oxygen rich liquid withdrawn at an intermediate level of the low pressure column 200 pressurized by the pump 600 and in the tank by a flow of gaseous air 122 from the turbines 17, 19.
- the mixing column is essentially at medium pressure.
- a flow of oxygen gas 37 is withdrawn at the top of the mixing column and then warms in the exchange line 9 and a liquid flow 41 is withdrawn in the tank and sent to the low pressure column after expansion in a valve. It is possible to withdraw an intermediate flow from the column 300 which is sent to the low pressure column.
- a flow of air at atmospheric pressure is compressed to about 15 bar in a main compressor (not shown). The air is then optionally cooled, before being purified to remove impurities (not shown). The clean air is divided in two.
- Part of the air 3 is sent to a booster 5 where it is compressed to a pressure of between 17 and 20 bars and then the air is cooled by a condenser water 7 before being sent at the hot end of the main exchange line 9 of the air separation apparatus.
- the supercharged air 11 cools to an intermediate temperature before being divided into two fractions 103, 123.
- the fraction 103 exits the exchange line and is divided again into two fractions.
- a fraction 13 is sent into a turbine 17 and the remainder, a fraction 15 is sent into a turbine 19.
- the two turbines have the same temperature and suction pressure and the same temperature and outlet pressure but it is obviously possible that these temperatures and pressure are close to each other instead of being identical.
- the two turbine flows are mixed to form an air flow 21 of which a portion 121 is sent to the double column and the remainder 122 to the mixing column 300.
- the turbine 19 may be an insufflation turbine opening up to the pressure of the low pressure column.
- the fraction 123 continues to cool in the exchange line 9 and leaves it upstream of the cold end to be sent to the bottom reboiler 301 of the mixing column 300 where the fraction condenses at least partially to form the flow 125.
- other part 2 of the air at 15 bars constituting the rest of the air is cooled in the exchange line at an intermediate temperature higher than the suction temperature of the turbines 17, 19, compressed in a second booster 23 until at about 30 bar and reintroduced into the exchange line 9 at a higher temperature to continue cooling.
- the column system of an air separation apparatus is constituted by a medium pressure column 100 thermally connected with a low pressure column 200 to minaret, a mixing column 300 and an optional argon column (not shown).
- the low pressure column does not necessarily have a minaret.
- the medium pressure column operates at a pressure of 5.5 bar but can operate at a higher pressure.
- the gaseous air 121 from the two turbines 17, 19 is the flow rate delivered to the bottom of the medium pressure column 100.
- the liquefied air 37 is expanded in the valve 39 and sent at least to the medium pressure column 100.
- 51, lower lean liquid 53 and upper lean liquid 55 are sent from the medium pressure column 100 to the low pressure column 200 after expansion stages in valves and subcooling.
- Liquid oxygen is pressurized by the pump 500 and sent as pressurized liquid 25 to the exchange line 9. In addition or alternatively other liquids, pressurized or not, can vaporize in the exchange line.
- Nitrogen gas is optionally withdrawn from the medium pressure column and is also cooled in the exchange line 9.
- Nitrogen 33 is withdrawn at the top of the low pressure column and is heated in the exchange line, after have been used to sub-cool the reflux liquids.
- Residual nitrogen 27 is withdrawn from a lower level of the low pressure column and heats up in the exchange line, after having been used to sub-cool the reflux liquids.
- the column may optionally produce argon by treating a flow 51 withdrawn in low pressure column 200.
- the mixing column 300 is fed only at the top by an oxygen rich liquid withdrawn at an intermediate level of the low pressure column 200 and pressurized in the pump 600. The mixing column operates essentially at medium pressure.
- the mixing column 300 can operate at a pressure different from the average pressure. Possibly part of the rich liquid 51 can be sent to the bottom of the column 300. A flow of gaseous oxygen 37 is withdrawn at the top of the mixing column and is heated in the exchange line 9 and a liquid flow 41 is withdrawn. in tank and sent to the low pressure column after expansion in a valve.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL05717658T PL1711765T3 (pl) | 2004-01-12 | 2005-01-07 | Sposób i instalacja do rozdzielania drogą destylacji kriogenicznej |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0450067A FR2865024B3 (fr) | 2004-01-12 | 2004-01-12 | Procede et installation de separation d'air par distillation cryogenique |
| PCT/FR2005/050011 WO2005073651A1 (fr) | 2004-01-12 | 2005-01-07 | Procédé et installation de séparation d'air par distillation cryogénique |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1711765A1 true EP1711765A1 (fr) | 2006-10-18 |
| EP1711765B1 EP1711765B1 (fr) | 2013-06-19 |
| EP1711765B8 EP1711765B8 (fr) | 2013-08-28 |
Family
ID=34685057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05717658.8A Expired - Lifetime EP1711765B8 (fr) | 2004-01-12 | 2005-01-07 | Procédé et installation de séparation d'air par distillation cryogénique |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US20080223076A1 (fr) |
| EP (1) | EP1711765B8 (fr) |
| JP (1) | JP2007518054A (fr) |
| CN (1) | CN100432601C (fr) |
| BR (1) | BRPI0506789B1 (fr) |
| ES (1) | ES2425944T3 (fr) |
| FR (1) | FR2865024B3 (fr) |
| PL (1) | PL1711765T3 (fr) |
| RU (1) | RU2360194C2 (fr) |
| UA (1) | UA89365C2 (fr) |
| WO (1) | WO2005073651A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10794630B2 (en) | 2017-08-03 | 2020-10-06 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Method and device for separating air by cryogenic distillation |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2895068B1 (fr) * | 2005-12-15 | 2014-01-31 | Air Liquide | Procede de separation d'air par distillation cryogenique |
| FR2913759B1 (fr) * | 2007-03-13 | 2013-08-16 | Air Liquide | Procede et appareil de production de gaz de l'air sous forme gazeuse et liquide a haute flexibilite par distillation cryogenique. |
| DE102012017484A1 (de) * | 2012-09-04 | 2014-03-06 | Linde Aktiengesellschaft | Verfahren und Anlage zur Erzeugung flüssiger und gasförmiger Sauerstoffprodukte durch Tieftemperaturzerlegung von Luft |
| BR112015009379A2 (pt) * | 2012-11-02 | 2017-07-04 | Linde Ag | processo para separação de baixa temperatura de ar em uma usina de separação de ar e usina de separação de ar |
| IT201700042150A1 (it) * | 2017-04-14 | 2018-10-14 | Cristiano Galbiati | Separation equipment |
| CN111406192B (zh) * | 2017-11-29 | 2022-04-08 | 乔治洛德方法研究和开发液化空气有限公司 | 通过与氮气膨胀机联动制动的膨胀机增压机来产生增压空气的深冷精馏方法与设备 |
| CN113195991B (zh) * | 2018-12-19 | 2023-05-02 | 乔治洛德方法研究和开发液化空气有限公司 | 低温空气分离单元的启动方法和相关联的空气分离单元 |
| FR3090831B1 (fr) * | 2018-12-21 | 2022-06-03 | L´Air Liquide Sa Pour L’Etude Et L’Exploitation Des Procedes Georges Claude | Appareil et procédé de séparation d’air par distillation cryogénique |
| WO2021016756A1 (fr) * | 2019-07-26 | 2021-02-04 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Procédé et appareil de séparation de l'air par distillation cryogénique |
| US20230296314A1 (en) * | 2020-07-22 | 2023-09-21 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Argon enhancing method and device |
| CN116547488A (zh) * | 2020-11-24 | 2023-08-04 | 林德有限责任公司 | 用于空气低温分离的方法和设备 |
| CN116123820B (zh) * | 2023-01-28 | 2026-04-21 | 中科富海(杭州)气体工程科技有限公司 | 空分装置 |
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| SU711322A1 (ru) * | 1976-05-10 | 1980-01-25 | Московский Институт Химического Машиностроения | Установка разделени воздуха |
| DE3216510A1 (de) * | 1982-05-03 | 1983-11-03 | Linde Ag, 6200 Wiesbaden | Verfahren zur gewinnung von gasfoermigem sauerstoff unter erhoehtem druck |
| GB9008752D0 (en) * | 1990-04-18 | 1990-06-13 | Boc Group Plc | Air separation |
| JP2909678B2 (ja) * | 1991-03-11 | 1999-06-23 | レール・リキード・ソシエテ・アノニム・プール・レテュード・エ・レクスプロワタシオン・デ・プロセデ・ジョルジュ・クロード | 圧力下のガス状酸素の製造方法及び製造装置 |
| US5379598A (en) * | 1993-08-23 | 1995-01-10 | The Boc Group, Inc. | Cryogenic rectification process and apparatus for vaporizing a pumped liquid product |
| US5475980A (en) * | 1993-12-30 | 1995-12-19 | L'air Liquide, Societe Anonyme Pour L'etude L'exploitation Des Procedes Georges Claude | Process and installation for production of high pressure gaseous fluid |
| FR2721383B1 (fr) * | 1994-06-20 | 1996-07-19 | Maurice Grenier | Procédé et installation de production d'oxygène gazeux sous pression. |
| US5454227A (en) * | 1994-08-17 | 1995-10-03 | The Boc Group, Inc. | Air separation method and apparatus |
| US5490391A (en) * | 1994-08-25 | 1996-02-13 | The Boc Group, Inc. | Method and apparatus for producing oxygen |
| FR2731781B1 (fr) * | 1995-03-15 | 1997-05-23 | Air Liquide | Procede et appareil de vaporisation d'un debit liquide |
| GB9515907D0 (en) * | 1995-08-03 | 1995-10-04 | Boc Group Plc | Air separation |
| FR2744795B1 (fr) * | 1996-02-12 | 1998-06-05 | Grenier Maurice | Procede et installation de production d'oxygene gazeux sous haute pression |
| RU2137993C1 (ru) * | 1997-05-07 | 1999-09-20 | Зао "Лентехгаз" | Способ разделения воздуха |
| JP3737611B2 (ja) * | 1997-08-08 | 2006-01-18 | 大陽日酸株式会社 | 低純度酸素の製造方法及び装置 |
| FR2787560B1 (fr) * | 1998-12-22 | 2001-02-09 | Air Liquide | Procede de separation cryogenique des gaz de l'air |
| DE19951521A1 (de) * | 1999-10-26 | 2001-05-03 | Linde Ag | Verfahren und Vorrichtung zur Gewinnung eines Druckprodukts durch Tieftemperaturzerlegung von Luft |
| FR2851330B1 (fr) * | 2003-02-13 | 2006-01-06 | Air Liquide | Procede et installation de production sous forme gazeuse et sous haute pression d'au moins un fluide choisi parmi l'oxygene, l'argon et l'azote par distillation cryogenique de l'air |
| FR2854683B1 (fr) * | 2003-05-05 | 2006-09-29 | Air Liquide | Procede et installation de production de gaz de l'air sous pression par distillation cryogenique d'air |
| FR2854682B1 (fr) * | 2003-05-05 | 2005-06-17 | Air Liquide | Procede et installation de separation d'air par distillation cryogenique |
-
2004
- 2004-01-12 FR FR0450067A patent/FR2865024B3/fr not_active Expired - Lifetime
-
2005
- 2005-01-07 US US10/585,834 patent/US20080223076A1/en not_active Abandoned
- 2005-01-07 BR BRPI0506789-8A patent/BRPI0506789B1/pt not_active IP Right Cessation
- 2005-01-07 PL PL05717658T patent/PL1711765T3/pl unknown
- 2005-01-07 CN CNB200580002063XA patent/CN100432601C/zh not_active Expired - Fee Related
- 2005-01-07 EP EP05717658.8A patent/EP1711765B8/fr not_active Expired - Lifetime
- 2005-01-07 RU RU2006129296/06A patent/RU2360194C2/ru not_active IP Right Cessation
- 2005-01-07 ES ES05717658T patent/ES2425944T3/es not_active Expired - Lifetime
- 2005-01-07 JP JP2006548362A patent/JP2007518054A/ja active Pending
- 2005-01-07 WO PCT/FR2005/050011 patent/WO2005073651A1/fr not_active Ceased
- 2005-07-01 UA UAA200607616A patent/UA89365C2/uk unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005073651A1 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10794630B2 (en) | 2017-08-03 | 2020-10-06 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Method and device for separating air by cryogenic distillation |
| US10866024B2 (en) | 2017-08-03 | 2020-12-15 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Device and method for separating air by cryogenic distillation |
| US12181217B2 (en) | 2017-08-03 | 2024-12-31 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Apparatus and method for separation of air by cryogenic distillation |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2865024B3 (fr) | 2006-05-05 |
| CN1910419A (zh) | 2007-02-07 |
| CN100432601C (zh) | 2008-11-12 |
| PL1711765T3 (pl) | 2013-10-31 |
| BRPI0506789A (pt) | 2007-05-22 |
| EP1711765B1 (fr) | 2013-06-19 |
| US20080223076A1 (en) | 2008-09-18 |
| JP2007518054A (ja) | 2007-07-05 |
| BRPI0506789B1 (pt) | 2018-02-06 |
| WO2005073651A1 (fr) | 2005-08-11 |
| UA89365C2 (uk) | 2010-01-25 |
| FR2865024A1 (fr) | 2005-07-15 |
| RU2006129296A (ru) | 2008-02-20 |
| EP1711765B8 (fr) | 2013-08-28 |
| RU2360194C2 (ru) | 2009-06-27 |
| ES2425944T3 (es) | 2013-10-18 |
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